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Merge pull request #2923 from Patater/reduce-ram-pem-csr

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x509write_csr: Reduce stack usage of mbedtls_x509write_csr_pem()
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Jaeden Amero 2019-11-14 16:39:48 +00:00 committed by GitHub
parent b9b5f493d3 6ffac75995
commit df8185eae3
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 3 deletions
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library/x509write_csr.c
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@ -264,17 +264,16 @@ int mbedtls_x509write_csr_pem( mbedtls_x509write_csr *ctx, unsigned char *buf, s
void *p_rng ) void *p_rng )
{ {
int ret; int ret;
unsigned char output_buf[4096];
size_t olen = 0; size_t olen = 0;
if( ( ret = mbedtls_x509write_csr_der( ctx, output_buf, sizeof(output_buf), if( ( ret = mbedtls_x509write_csr_der( ctx, buf, size,
f_rng, p_rng ) ) < 0 ) f_rng, p_rng ) ) < 0 )
{ {
return( ret ); return( ret );
} }
if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_CSR, PEM_END_CSR, if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_CSR, PEM_END_CSR,
output_buf + sizeof(output_buf) - ret, buf + size - ret,
ret, buf, size, &olen ) ) != 0 ) ret, buf, size, &olen ) ) != 0 )
{ {
return( ret ); return( ret );